Sewer-trap valve



June 5 1923.

. 1,45 7,580 5. KURTZ SEWER TRAP VALVE Filed Jan. 12

2 Sheets-Sheet 1 F67 Z STANLEY KURTZ INVENTQR.

BY WW when K ATTORNEYS June 5, 1923. 1,457,580

s. KURTZ SEWER TRAP VALVE Filed Jan. 12 1922 2 Sheets-Sheet 2 I9 ea 18 5 w- STANLEY KURTZ INVENTOR.

BY wvT -o 4 ATTORNEYS Patented June 5, 1923.

STANLEY KURTZ, OF' LO RIAIN, OHIO;

'VALVE.'

Application fiiedia uar e, 192a. Serial-1T0. senses.- l

Ta'a ZZ wh-Omit mayconcerm- Be it known that I, STANLEY KURTZ,- a

citizen of the} United Statearesiding. at Lorain, in the county of Lorain I and State of- Oh'io, haveinvented certainne-w and use ful Improvements in Sewerl r-ap Valves, of which-the following-isa full, clear, and con-- cise description, as wili'enable others skilled in the artto' which my invention appertains -to makeandusetliesame;

'Myinvention relates to sewer-,trap'valvesandunore particularlytosnehw'alves as are used in COIIIIQCUOH with dra1ntraps; forsewer pipes.

It' is aparticularobject ofxmy invention te -provide avalve of the general character mentionedwhiehris so constructedv as to efiectively prevent the black-flowofsewage, operative whenever the water or sewage rises in the sewer pipeto whichmy valve isattached.

Another objeot of my invention is to providea cage on the sewerside of thBrOPQI'Ett ing element of my valve so as: toprevent clogging of the valvemechanism by trash.

Another object of my inventionis t'o provide such: a' valve: mechanism which may have its: operating partaremovedas: a-unit so as to a provide large opening: through which" access may be had to the interior of the sewer pipeafor; cleaningthe same.

Otherobjects of my invention andv the inventionitself will be-made clear by reference to the following;descriptionot my invent-ion, and the drawings forming a part thereof. Referring to the drawings- Fig: 1: shows-a V'TlZlC-EtliCIOSS-SBOtlOIlfll view of an embodiment of inventlon, except that the float ball; valve member is herein shown in: side elevation.

=F'ig. 2 shows a partial plan view looking from above of the embodiment of my invention illustrated in- Fig. 1. A V Fig. Sshow-s atop plan view of-the embodiment illustrated in Fig. 1' with the cover plate removed so as to expose some of theinner parts. v

Fig-,4 shows a side elevational View of a portion of the annular 'ringvalve seat memher tO l111lSiiI2t=1th8 securing means there.-

fora

cover member.

Referring. nowtoall of theyfig ures in the-endof-thepipe, and upon which shoulder the sewer trapvalve apparatus of my invent on-is adaptedto-rest.

r 3; a perforated cover there-for! 4t, an annular which like parts are designated by like ref-Y erence characters, at-1 I show the; upper. end of a sewer pipe which I is provided with the usual annular internal; shoulder, 2f near This .apparatus comprises: abasin member valve-seat ring 5,- a valvefball supporting, bridge 6, a valveb'all7 together'withiaiprm jectingmage on guard. 8;. and varionsmeans for'securing'the above-parts together-iinioperative relation, toeachother.

The basin" member 3 comprises. side walls: 9 andabottom walllQi the said bottom. wall eigtending inwardly, however, OnlyJaL short. distance; having a relatively, large. central I openingll Thehasinfi alsopreferably has i anexternalbead 121011 its lower-most portion-adaptedto restonthe shoulder 2,0ftlie I pipe 14-, 7

Thelspace 13v between the basin side walls. Q and the sewer pipe 1. isfilledby. oementior other filling; material. The. covers, a1 plurality of perforations 1A,. andlaniannililar depending. ring flangev portionfli. such portionshaying.bayonet joint notcheslfionl i opposite *sides whereby thecover. may-gbe pnt into place and rotated slightly to. latch: the cover'to basinwallssg) by means. of latch pins 17. projecting inwardly from: the-sidewalls otthebasin: i

An annular. ring Valve seatimemben 5-,is insertable into the basin Swhen the cover l. is removed, this be-ing capable of being done since thering member- 5 hasa notchedportion 18, the notches ofw-hich are. adapted to permit the ringeto clear the pin 17 asthe, ring is inserited into, the basin, also thenotched: portions 18: having inclined exten sions 19 communicating therewithiare adaptled to. receive pins, 20: extending inwardly y from the side walls 9 of. thebasin3 just as do the, similar pins '17- for the cover-secur- 10 ing means, and the annular ringtfi is rotated to a position where the: notches 1 8 embrace the pinsQO and allow. the ring 5 =to;con ie. v to rest uponthe seatQl formed by the-bot;

tom. 10' of the basin, except. for. thehinter-l 1(15' v v veiling gasket 22cand.guard supporting ring Fig. 5 shows: a similar side elevational- View of the securing means-portion of the:

23 hereinafter described. fll ev pins 20 for the annular ring. securing means are disposed opposite: sides-of. the

basin and. atright angles to thesidesiof the basin where the pin 17 for the cover securing means are placed. In Figs. 4 and 5, the pins 20 and 17 are indicated to show the position thereof within the openings provided for them onthe members 5 and respectively when the ring and cover are secured tightly in place on the basin. Fig. 3 shows a plan view of the ring securing means com prising the pins and the notch 18 with the inclined portion 19 in ring securing positions. The pins 17 and 20 are preferably screw threaded so as to facilitate securing them tightly in the walls 9 of the basin 3.

In this way I have provided means whereby both the cover 1 and the annular ring 5, which carries all of the working parts of the valve, are adapted to be put into place by a simple slight rotational action and removed in the same way. The guard cage 8 is preferably constructed as illustrated of wires and preferably comprises an outer cage 24 and an inner cage 25, the outer cage having larger openings as for instance three-quarter inch openings, and the inner cage having openings perhaps three-eighths inch, although these dimensions may be varied considerably. I find that a double cage operates more efficiently than a single cage to prevent trash from getting to the valve seat 26 and between the said valve seat and the valve ball 7 to prevent the valve ball from floating upwardly to close the valve comprising the seat and the surface of the ball. The ball 7 is supported on arod 27 which is journaled at 28 loosely so that it may reciprocate in the said journal to permit the valve to open and close the central opening 28 of the annular ring 5. The rod 27 has an enlarged head 29 adapted to rest normally on the top surface 30 of the bridge member 6. The bridge member 6 is secured by machine screws 31 and 82 to the annular ring 5 so that when the annular ring 5 is removed as for inspection or cleaning of the parts, the bridge, together with. the ball 7, can be removed together, permitting the removal lastly of the double cage 8.

The cage supporting ring 23 and the gas ket 22 are put into place in assembling the apparatus of'my invention before the ring 5 and preferably in the order mentioned, the gasket 22 being of slightly compressible material so as to make a tight joint to prevent the egress of liquid at the sides of the ring 5.

When the internal operative parts are removed,cit will be seen that an opening 11 in the bottom of the basin 3 is presented for the workman to easily secure access to the interior of the sewer pipe for cleaning purposes. 7 7

Having thus. described my invention in a specific embodiment, it will be understood that numerous and extensive departures 1. In a back-flow check valve for sewers and the like, the combination with a tubular basin member, said tubular member having outwardly and inwardly extending flanges on its lower end, an annular ring loosely fitting within the said tubular member, clamping projections extending from the side walls inwardly from the said tubular member, said annular ring being adapted toibe clamped between the said inwardly' extending flange and said projection, a

bridge member spanning and mounted upon the said ring, a ball float, a rod secured to one end thereof and extending therefrom, a

valve seat on the lower inner edge of said ring, a journal at the middle point extending vertically in said bridge, said rod being vertically slidable in said journal whereby said ball float may rise to engage the said seat to close the valve. 7 a

2. In a sewer trap valve mechanisma basin memberhaving cylindrical side walls and a bottom wall, said bottom wall having a large central opening, a removable perforated cover for the basin, an annular ring of substantially the same diameter as the internal diameter of the basin and insertable therein and adapted to be clamped against the inner surface of the said basin bottom wall, a valve seat on the said annular memher, said valve seat being disposed within the said bottom wall opening and above the same, a yoke spanning and mounted on said annular member, a ball float valve for the said seat, and a valve stem projecting from the valve and slidably mounted in said yoke and having'an enlarged head at its up perend whereby said ball float valve member may be reciprocated upwardly and downwardly to close and open the valve, and a perforated cage having an upper outwardly extending ring flange, said flange being clamped between the said ring and the said bottom wall.

' 3. In a back-flow check valve for sewers and the like, the combination with a tubular basin member, said tubular member having outwardly and inwardly extending flanges on its lower end, an annular ring loosely fitting within the said tubular member, clamping projections extending from the side walls inwardly from the said tubular member, said annular ring being adapted to be clamped between the said inwardly extending flange and said projection, abridge member spanning and mounted upon the said ring, a ball float, a rod secured to one end thereof and extending therefrom, a valve seat on the lower inner edge of said ring, a journal at the middle point extending vertically in said bridge, said rod being vertically slidablein said journal wherebyated cover for the basin, an annular ring of substantially the same diameter as the internal diameter of the basin and insertable therein and adapted to be clamped against the inner surface ofthe said basin bottom wall, a valve seat on the said annular member, said valve seat being disposed within the said bottom wall opening and above "the same, a yoke spanning and, mounted on said annular member, a ball float valve for the said seat, and a valve stem pro ecting from the valve and shdably mounted Ills-31d yoke and having an enlarged head at its upper end whereby said ball float valve member may be reciprocated upwardly and downwardly to close and open the valve, and a perforated cage having an upper outwardly.

extending ring flange, said flan ge being clamped between the said ring and the said bottom wall, said cage comprising outer and inner perforated walls, the openlngs 1n the said outer wall being larger than those of:

the said inner wall. a

5. In a back-flow check valve for sewers and the like, the combination with a tubular basin member,-said tubular member having outwardly and inwardly extending flanges on its lower end, an annular ring loosely fitting within the said, tubular. member,

clamping projections extending from the side walls inwardly from the sald tubular member, said annularring'being adapted to be clamped between the said nwardly extending flange and said pro ection, a bridge member spanning and" mounted upon the said ring, a ball float, a rod secured to one end thereof and extending therefrom, a"

valve seat on the lower inner edge-of said ring, a journal at the middle point extending vertically in saidbridge, said rod beingvertically slidable in said journal whereby said ball float may rise to engage the said, seat to close the valve, andv a wirev cage guard having a plurality of perforated walls disposed about the said ball float and'having an upper outwardly extending flange" supporting portion, said flange supportingportion being adapted to be clamped ibetween the said ring and the said inwardly extending basin flange. r a a r 6. In a back-flow check valve for sewers and the like, thecombination with a tubular 7 said rin basin member, said-tubular member having i outwardly and inwardly extending flanges on its lower end, an annularringloosely fitting wvithin the said tubular member,

clamping projections extending from the side walls inwardly from the said tubular inember, said annular ring being adapted .to be clamped between the said inwardly ex-" tending flange and said projection, a bridge member spannlng and mounted upon the g, a ball float, a'rodsecured" to one end thereof and extending therefrom, a, valveseat on the lower inner edge of said ring, a journal at the middle point extending vertically in said bridge, said rod being-vertically slidable in saidjour-nal whereby said ball float may rise to engage thesaid seat to close the valve, anda wire" cageguard having a plurality of perforated walls dis 'aposed about the said ball float and having an upper outwardly extending flange supporting portion, said flangesupporting portion being adapted to be clampedb'etweenthe said ring and the said inwardly extending.

basin flange, 'said annular ringpand said rod and ball'float being removable as a unitby a slight. rotational turning to disable the clamping means.

7. In a back-flow checkvalve for sewers and the like,the combination with a tubular basin member, said tubular member-having" outwardly and inwardly extending flanges on lts lower end, an annular, ring loosely fitt1ng"w thin the said tubular member,

clamping projections extending from the side walls inwardly tfrom the said tubular member, said annular ring bein'g'adapted to be clamped between the said inwardly extending'flange and said projection,- a bridge member spanning and mounted upon the said ring, a ball float, a rod secured to one end thereof and extending therefrom, a valve seaton theflo'wer inner edge of said ring,

a journal at the middlepoint extending vertically in said bridge, said rod beingvertically slidable insaid journal whereby, said ball float'may rise to engage the said seat to close the valve, andawire cage guard dis-s posed aboutthesaid ball .float and having, an upper outwardly extending flange sup-' porting portion, said flange supporting porthe said ringandthe said inwardly extending basin. flange, said guardcomprisingfl outer and .inner perforated walls, said annular ring: and said rod and ball float being removable as a unit by a slight rotational turning to disable the clamping tion being adapted to be clamped between means. said'guard being removable as a;

unit-aftertlie removal of the'said ring and ring supportedapparatus. fIn witness whereof, I have hereunto signed mynaine this 10th day of January, 1922.

' STANLEY m 

